556910897 has 4 divisors (see below), whose sum is σ = 557585136. Its totient is φ = 556236660.

The previous prime is 556910857. The next prime is 556910899. The reversal of 556910897 is 798019655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 556910897 - 2⁶ = 556910833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556910899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335879 + ... + 337532.

It is an arithmetic number, because the mean of its divisors is an integer number (139396284).

Almost surely, 2^556910897 is an apocalyptic number.

It is an amenable number.

556910897 is a deficient number, since it is larger than the sum of its proper divisors (674239).

556910897 is an equidigital number, since it uses as much as digits as its factorization.

556910897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674238.

The product of its (nonzero) digits is 680400, while the sum is 50.

The square root of 556910897 is about 23598.9596592731. The cubic root of 556910897 is about 822.7386604290.

The spelling of 556910897 in words is "five hundred fifty-six million, nine hundred ten thousand, eight hundred ninety-seven".